21056555080

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{73}}^1\times {\mathrm{655559}}^1$

素因数の和:655654

約数の個数: 64

約数和(自身を含む): 52392355200

約数和(自身を除く): 31335800120

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 73, 88, 110, 146, 220, 292, 365, 440, 584, 730, 803, 1460, 1606, 2920, 3212, 4015, 6424, 8030, 16060, 32120, 655559, 1311118, 2622236, 3277795, 5244472, 6555590, 7211149, 13111180, 14422298, 26222360, 28844596, 36055745, 47855807, 57689192, 72111490, 95711614, 144222980, 191423228, 239279035, 288445960, 382846456, 478558070, 526413877, 957116140, 1052827754, 1914232280, 2105655508, 2632069385, 4211311016, 5264138770, 10528277540, 21056555080]

約数ペア:

[(1, 21056555080), (2, 10528277540), (4, 5264138770), (5, 4211311016), (8, 2632069385), (10, 2105655508), (11, 1914232280), (20, 1052827754), (22, 957116140), (40, 526413877), (44, 478558070), (55, 382846456), (73, 288445960), (88, 239279035), (110, 191423228), (146, 144222980), (220, 95711614), (292, 72111490), (365, 57689192), (440, 47855807), (584, 36055745), (730, 28844596), (803, 26222360), (1460, 14422298), (1606, 13111180), (2920, 7211149), (3212, 6555590), (4015, 5244472), (6424, 3277795), (8030, 2622236), (16060, 1311118), (32120, 655559)]